PIC simulation of Vacuum Arc Mrunal Parekh VJTI-SIEMENS high voltage laboratory-Mumbai Electrical Research & Development Association.

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Presentation transcript:

PIC simulation of Vacuum Arc Mrunal Parekh VJTI-SIEMENS high voltage laboratory-Mumbai Electrical Research & Development Association

How it Look like

Schematic of vacuum Discharge

Motivation Vacuum arc physics – The crux for vacuum interrupter development Mathematical approach for visualization of vacuum discharge process

Electrodynamic Model Idea is to identify current density and heat flux in vacuum switch Considered Short circuit current of 40kA and 11kV system voltage as input parameter Solved Maxwell’s equation along with constitutive relations

PIC Model Tried three scenarios with different voltages: 1kV, 2kV, 4kV, 10kV a)2mm AK gap b)10mm AK gap c)20mm AK gap with secondary electron and copper ion (Cu +1 ) emission from anode

Case (a) 2 mm AK gap 1kV2kV 4kV 10kV

Case (a) 2 mm AK gap with 1kV

Case (c) 20mm AK gap 1kV2kV 4kV 10kV

Case (c) 20mm AK gap with 1kV

10mm 1 kV 20mm 1 kV

conclusion This Hypothetical study can help in setting the basis for studying breakdown phenomena in vacuum circuit breaker Approach can give visualization of vacuum breakdown process and partial statistics

Thank you.. Thank you..

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